Context viewer sometimes messes up tags

[gkunter]

Originally reported by: gkunter (Bitbucket: gkunter, GitHub: gkunter)

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PROBLEM: The context viewer sometimes messes up the tags. For example, in the BNC when displaying the first hit for the query opium poppies with a context size of 19 words, the following output is produced:

#!xml
<None>other by rugged mountain ranges of crystalline rocks, sub-tropical crops such as rice, tobacco, cotton and <b> opium </b> <b> poppies </b> are grown. Total rainfall is low, with many places receiving under 500 mm (20 in)

Other context sizes work okay.

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• Bitbucket: https://bitbucket.org/gkunter/coquery/issue/57

[gkunter]

Original comment by gkunter (Bitbucket: gkunter, GitHub: gkunter):

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Fix Issue #57 (caused by tag elements that are unsupported, but were still processed)